OK, so I went through the hassle to set this up (5 hours later, I figure it's all correct now....what a PITA though). While I didn't fully play every game, I did test to make sure every game loaded and started. Here is what I discovered so far.
Ms. Pac-Man and Ms. Pac Attack don't work. I've tried a couple different revisions of the mspacman.zip ROM and get the same result every time. The game loads and goes through all that initialization scramble stuff, then black screens. All other versions of Ms. Pac-Man seem to work fine, just not those two.
EDIT: I just verified the CRCs of both zips involved through MAWS, they match perfectly, but the games don't run.
Abscam has a minor bug.....if you go through the portal at the top of the screen, the playfield doesn't scroll down soon enough so you can see your guy appear at the bottom, causing a playability issue. Eventually, it will correct itself, but only after you move above the bottom line of the playfield.
Crazy Kong seems to be using an odd version of the ckong.zip....while I finally found a working one, most sites had a different revision, which made finding the correct one difficult to track down. You need the one that has the "falcon7" file in the zip.....most didn't.
EDIT: Removed my ranting and complaining about gathering all the ROMs and changed it to a bug report, which is more constructive.